SQLLite vol 1.

src/WorkFlowCheck.MAUI/DataLayer/AppDbContext.cs

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+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WorkFlowCheck.MAUI.DataLayer.Entities;
+
+namespace WorkFlowCheck.MAUI.DataLayer
+{
+    public class AppDbContext : DbContext
+    {
+        private string DbPath { get; }
+
+        public DbSet<CheckListTemplateHeader> CheckListTemplateHeaders { get; set; }
+        public DbSet<CheckListTemplateRow> CheckListTemplateRows { get; set; }
+        public DbSet<CheckPoint> CheckPoints { get; set; }
+        public DbSet<Equipment> Equipments { get; set; }
+
+        public AppDbContext()
+        {
+            DbPath = Path.Combine(FileSystem.AppDataDirectory, "wfc.db");
+        }
+        protected override void OnConfiguring(DbContextOptionsBuilder options)
+        {
+            options.UseSqlite($"Data Source={DbPath}");
+        }
+    }
+}

src/WorkFlowCheck.MAUI/DataLayer/Entities/CheckListTemplateHeader.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WorkFlowCheck.MAUI.DataLayer.Entities
+{
+    public class CheckListTemplateHeader
+    {
+        public int Id { get; set; }
+        public string ShortName { get; set; } = null!;
+        public string Description { get; set; } = null!;
+        
+    }
+}

src/WorkFlowCheck.MAUI/DataLayer/Entities/CheckListTemplateRow.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WorkFlowCheck.MAUI.DataLayer.Entities
+{
+    public class CheckListTemplateRow 
+    {
+        public int Id { get; set; }
+        public int RowIndex { get; set; }
+        public int CheckListTemplateHeaderId { get; set; }
+        public virtual CheckListTemplateHeader CheckListTemplateHeader { get; set; }
+        public int EquipmentId { get; set; }
+        public virtual Equipment Equipment { get; set; }
+        public int CheckPointId { get; set; }
+        public virtual CheckPoint CheckPoint { get; set; }
+        public string OperationDescription { get; set; } = null!;
+        
+    }
+}

src/WorkFlowCheck.MAUI/DataLayer/Entities/CheckPoint.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WorkFlowCheck.MAUI.DataLayer.Entities
+{
+    public class CheckPoint
+    {
+        public int Id { get; set; }
+        public string ShortName { get; set; } = null!;
+        public string Code { get; set; } = null!;
+
+
+    }
+}

src/WorkFlowCheck.MAUI/DataLayer/Entities/Equipment.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WorkFlowCheck.MAUI.DataLayer.Entities
+{
+    public class Equipment
+    {
+        public int Id { get; set; }
+        public string ShortName { get; set; } = null!;
+        public string EquipmentNumber { get; set; } = null!;
+    }
+}